Is based on supply and demand. With little or no government control. Buyers and sellers are allowed to transact freely if on mutual price agreement without state interfering in the form of taxes, subsidies or regulation.
Senators serve 6 years terms and elections over Senate are staggered over even years. So only one third of senate is up for reelection.
The type of parenting in this situation is permissive style.
Registering to vote as a member of the democratic party : C. Prohibits you from voting in a republican primary election in a closed primary state
The one that allowed to vote in a closed primary state is the one that registered to that specific party
hope this helps